Join Scott Gardner for an in-depth discussion in this video Understand generics, part of Swift 3 Essential Training: Beyond the Basics.
- [Instructor] Swift is a strongly typed…and type-safe language.…Up to this point in the course,…I have either explicitly specified the type,…or allowed the compiler to infer type.…I've shown you that using Any…and AnyObject gives you some flexibility,…but at the expense of type safety.…You have no idea what the underlying type is,…and instead have to do type checking and casting…in order to do anything with the underlying type instances.…I've also shown you that using protocol types…gives you some flexibility,…while maintaining type safety.…
But it requires type checking and casting…to work with the underlying instances, properties,…and methods outside of the protocol requirements.…Generics gives you maximum flexibility,…complete type safety,…and the ability to work directly with an instance…without having to type check and cast.…Generics are used extensively in Swift.…In fact, arrays, sets,…and dictionaries are all generic collections.…Here's the definition of an array of type string…using the long hand syntax.…
- Adding source files, resources, links, and literals
- Adding pages to a playground
- Using overflow operators and bitwise operators
- Using ranges with strings
- Creating complex sequences
- Chaining higher-order functions
- Defining lazy properties
- Using failable initializers
- Mutating methods
- Working with singletons
- Nesting function types
- Creating error types and recursive enumerations
- Extending concrete types
- Referencing selectors and key paths
- Working with protocol-oriented programming
- Defining class-only protocols and optional protocols
- Using option sets, type checking, and casting operators
Skill Level Intermediate
Core Data for iOS and macOS Enterprise Developerswith Jon Bott1h 46m Intermediate
Distributing Your iOS App for Testing with TestFlightwith Ron Buencamino35m 10s Intermediate
iOS App Development: Test-Driven Developmentwith Harrison Ferrone2h 14m Intermediate
3. Strings and Characters
4. Sequences and Collections
5. Control Flow
6. Value and Reference Types
9. Access Control
Understand access control3m 47s
Next steps1m 2s
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